1 August 1995 Hologram enhancement in photorefractive media
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We consider the possibility of restoration and/or enhancement of decaying holograms in photorefractive media by using a simple optical readout in conjunction with a phase conjugator. The results indicate that extremely weak holograms can be enhanced provided that the two-beam coupling is sufficiently strong. Steady-state photorefractive holograms can be maintained continuously without decay by using a properly designed readout scheme. The result also provides an explanation for the formation of mutually pumped phase conjugation in terms of the amplification of initial noise gratings.
Pochi Yeh, Pochi Yeh, Claire Gu, Claire Gu, Chau-Jern Cheng, Chau-Jern Cheng, Ken Yuh Hsu, Ken Yuh Hsu, } "Hologram enhancement in photorefractive media," Optical Engineering 34(8), (1 August 1995). https://doi.org/10.1117/12.209465 . Submission:

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